A transformer-free, on-line UPS with best-in-class efficiency, the Liebert APM enables capacity on demand with the addition of internal FlexPower core assemblies. The assemblies allow the system to expand for capacity or redundancy in 15-kilowatt (kW) increments up to 45 or 90-kW within a single cabinet.

The FlexPower cores incorporate distributed intelligence and scalable power in a common assembly and allow configuration of a completely redundant power and control system, sized to match the capacity of the protected equipment. When power requirements change, data center managers can easily add capacity without increasing the system footprint. This approach allows for right-sizing of the UPS, resulting in improved energy efficiency and reduced power expenditures.